From e0acd0bd0594161be44c054bb6b984972f444beb Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 26 May 2013 17:30:36 +0300 Subject: asm-generic: uaccess s/might_sleep/might_fault/ The only reason uaccess routines might sleep is if they fault. Make this explicit. Signed-off-by: Michael S. Tsirkin Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1369577426-26721-1-git-send-email-mst@redhat.com Signed-off-by: Ingo Molnar --- include/asm-generic/uaccess.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/asm-generic') diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index c184aa8ec8cd..dc1269c74a52 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -163,7 +163,7 @@ static inline __must_check long __copy_to_user(void __user *to, #define put_user(x, ptr) \ ({ \ - might_sleep(); \ + might_fault(); \ access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ? \ __put_user(x, ptr) : \ -EFAULT; \ @@ -225,7 +225,7 @@ extern int __put_user_bad(void) __attribute__((noreturn)); #define get_user(x, ptr) \ ({ \ - might_sleep(); \ + might_fault(); \ access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ? \ __get_user(x, ptr) : \ -EFAULT; \ @@ -255,7 +255,7 @@ extern int __get_user_bad(void) __attribute__((noreturn)); static inline long copy_from_user(void *to, const void __user * from, unsigned long n) { - might_sleep(); + might_fault(); if (access_ok(VERIFY_READ, from, n)) return __copy_from_user(to, from, n); else @@ -265,7 +265,7 @@ static inline long copy_from_user(void *to, static inline long copy_to_user(void __user *to, const void *from, unsigned long n) { - might_sleep(); + might_fault(); if (access_ok(VERIFY_WRITE, to, n)) return __copy_to_user(to, from, n); else @@ -336,7 +336,7 @@ __clear_user(void __user *to, unsigned long n) static inline __must_check unsigned long clear_user(void __user *to, unsigned long n) { - might_sleep(); + might_fault(); if (!access_ok(VERIFY_WRITE, to, n)) return n; -- cgit v1.2.3